Share this entry

estriol Syllabification: es·tri·ol
Pronunciation: /ˈestrīˌôl/ /- ˌäl/ /eˈstrīôl/ /eˈstrīäl/
(also oestriol)

Definition of estriol in English:


An estrogen that is one of the metabolic products of estradiol.
Example sentences
  • Even though the ovaries cease producing estradiol, estriol continues to be made by the adrenal glands and in fat cells.
  • Natural estrogen can also easily be divided into the three types of estrogen: estradiol, estrone, and estriol.
  • I assume that you're taking an oral dose of estriol or some combination of estriol, estrone, and estradiol.


1930s: from estrane (the parent molecule of most estrogens) + tri- + -ol.

Definition of estriol in:

Share this entry


What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources